Naïve young Englishman, Silas P. Binns inherits a substantial business in Chicago. Unaware of the city's reputation for rampant organized crime during the Prohibition era, Silas arrives in America with idealistic expectations. Upon his arrival, he finds himself inadvertently caught in the middle of a fierce and dangerous turf war between rival gangster factions. The humor of the film stems from Silas's "innocent" and oblivious nature as he navigates the violent underworld of Chicago, often mistaking life-threatening situations for ordinary business or social interactions.